Inzuzo enkulu ye-powder metallurgy ukuthi yenziwe ngezinto eziyimpushana ezishisiwe, ngakho-ke ukugeza kwamafutha njengoba ukuthambisa kuhle kakhulu, ukwakheka kwamazinyo nawo wonke amasayizi angakhiwa, ngokuvamile hhayi okunye ukucubungula; Ububi ukuthi kuhlobene nokucubungula kwendabuko. igiya, amandla awanele, awakwazi ukudlulisa i-torque enkulu, ukunemba kwamazinyo ngokuvamile kusezingeni elingu-6 ~ 9, ukunemba kobukhulu ngokuvamile izinga eliphakeme kakhulu le-IT7 ~ 6.
I-powder metallurgy iwubuchwepheshe obusha bokukhiqiza, nezinzuzo zayo, ezifanele ikakhulukazi ukukhiqizwa ngobuningi.Kodwa akusizo zonke izimo.I-Powder metallurgical processing idinga ukwakhiwa kwefa elihambisanayo, kusetshenziswa insimbi eyimpuphu ngokusebenzisa i-sintering kanye nenqubo ehambisanayo yokwenza izingxenye.Amandla ayahlukahluka kuye ngezinto ezisetshenzisiwe.
1. Iningi lezinsimbi eziphikisayo nezinhlanganisela zazo, ama-alloys amanga, izinto ezimbotshana zokwenziwa zingenziwa kuphela nge-powder metallurgy method.
2. ngenxa yokuthi indlela ye-powder metallurgy ingacindezelwa kusayizi wokugcina wokuhlanganisa, ngaphandle noma isidingo esincane sokucutshungulwa komshini okulandelayo, ingasindisa kakhulu insimbi, yehlise izindleko zomkhiqizo.Ukulahlekelwa kwensimbi lapho kukhiqizwa imikhiqizo nge-powder metallurgy. Indlela i-1-5% kuphela, kuyilapho ukulahlekelwa kwensimbi ekukhiqizeni imikhiqizo ngendlela evamile yokuphonsa kungase kube phezulu ku-80%.
3. ngoba inqubo ye-powder metallurgy enqubweni yokukhiqiza ayincibiliki impahla, ayesabi ukuxubana nokungcola okulethwe yi-crucible kanye ne-deoxidizer, futhi i-sintering ngokuvamile yenziwa ku-vacuum nokunciphisa umkhathi, ingesabi i-oxidation. , futhi ngeke inikeze noma yikuphi ukungcola kwezinto ezibonakalayo, kungenzeka ukwenza izinto zokuhlanzeka okuphezulu.
4. indlela ye-powder metallurgy ingaqinisekisa ukunemba nokufana kwesilinganiso sokwakheka kwezinto.
5. i-powder metallurgy ifaneleka ukukhiqizwa kwesimo esifanayo nenani elikhulu lemikhiqizo, ikakhulukazi igiya nezinye izindleko eziphakeme zokucubungula imikhiqizo, ngokukhiqiza i-powder metallurgy kunganciphisa kakhulu i-cos yokukhiqiza.
Inzuzo enkulu ye-powder metallurgy ukuthi yenziwe ngezinto eziyimpushana ezishisiwe, ngakho-ke ukugeza kwamafutha njengoba ukuthambisa kuhle kakhulu, ukwakheka kwamazinyo nawo wonke amasayizi angakhiwa, ngokuvamile hhayi okunye ukucubungula; Ububi ukuthi kuhlobene nokucubungula kwendabuko. igiya, amandla awanele, awakwazi ukudlulisa i-torque enkulu, ukunemba kwamazinyo ngokuvamile kusezingeni elingu-6 ~ 9, ukunemba kobukhulu ngokuvamile izinga eliphakeme kakhulu le-IT7 ~ 6.
I-powder metallurgy iwubuchwepheshe obusha bokukhiqiza, nezinzuzo zayo, ezifanele ikakhulukazi ukukhiqizwa ngobuningi.Kodwa akusizo zonke izimo.I-Powder metallurgical processing idinga ukwakhiwa kwefa elihambisanayo, kusetshenziswa insimbi eyimpuphu ngokusebenzisa i-sintering kanye nenqubo ehambisanayo yokwenza izingxenye.Amandla ayahlukahluka kuye ngezinto ezisetshenzisiwe.
1. Iningi lezinsimbi eziphikisayo nezinhlanganisela zazo, ama-alloys amanga, izinto ezimbotshana zokwenziwa zingenziwa kuphela nge-powder metallurgy method.
2. ngenxa yokuthi indlela ye-powder metallurgy ingacindezelwa kusayizi wokugcina wokuhlanganisa, ngaphandle noma isidingo esincane sokucutshungulwa komshini okulandelayo, ingasindisa kakhulu insimbi, yehlise izindleko zomkhiqizo.Ukulahlekelwa kwensimbi lapho kukhiqizwa imikhiqizo nge-powder metallurgy. Indlela i-1-5% kuphela, kuyilapho ukulahlekelwa kwensimbi ekukhiqizeni imikhiqizo ngendlela evamile yokuphonsa kungase kube phezulu ku-80%.
3. ngoba inqubo ye-powder metallurgy enqubweni yokukhiqiza ayincibiliki impahla, ayesabi ukuxubana nokungcola okulethwe yi-crucible kanye ne-deoxidizer, futhi i-sintering ngokuvamile yenziwa ku-vacuum nokunciphisa umkhathi, ingesabi i-oxidation. , futhi ngeke inikeze noma yikuphi ukungcola kwezinto ezibonakalayo, kungenzeka ukwenza izinto zokuhlanzeka okuphezulu.
4. indlela ye-powder metallurgy ingaqinisekisa ukunemba nokufana kwesilinganiso sokwakheka kwezinto.
5. i-powder metallurgy ifaneleka ukukhiqizwa kwesimo esifanayo nenani elikhulu lemikhiqizo, ikakhulukazi igiya nezinye izindleko eziphakeme zokucubungula imikhiqizo, ngokukhiqiza i-powder metallurgy kunganciphisa kakhulu i-cos yokukhiqiza.
Ukuminyana kwempushana ye-athomu evamile (okuhlanganisa insimbi ye-carbon nensimbi ye-copper-carbon alloy) kungaphezu kuka-6.9, futhi ubulukhuni bokucisha bungalawuleka eduze kwe-HRC30.
Ngokuvamile, ukuminyana kwe-powder pre-alloyed (AB powder) kudlula i-6.95, futhi ubunzima bokucima bungalawulwa eduze kwe-HRC35.
Izimpushana eziphezulu ezifakwe ngaphambili ezinobuningi obukhulu kuno-6.95 kanye nobulukhuni bokucisha okulawulwa ku-HRC40.
Imikhiqizo ye-powder metallurgy eyenziwe ngezinto ezingenhla inokuqina okuzinzile kanye nezinto ezibonakalayo, futhi ubulukhuni ngemva kokwelashwa kokushisa buhlangabezana nezidingo ezihambisanayo, ngakho amandla abo okuqina namandla okucindezela azofinyelela esiqongweni esingcono.
Kodwa-ke, ngenxa yokuthi ukuminyana kwemikhiqizo ye-PM akuphakeme njengaleyo yensimbi enguNombolo 45, ukuminyana okuphezulu kakhulu kwezingxenye zokucindezela ze-PM kuvamise ukuba ngu-7.2 g/cm, kuyilapho ukuminyana kwensimbi engu-No. 45 kungu-7.9 g/cm.I-Carburizing ephoqelelwe i-powder metallurgy noma ukwelashwa kokushisa okuvama kakhulu okudlula i-HRC45 kuzokwenza imikhiqizo ye-powder metallurgy ibe brittle ngenxa yokucisha okukhulu, okuholela emandleni emikhiqizo ye-powder metallurgy.
1. Izinga eliphezulu lokusebenzisa impahla, kuze kufike ngaphezu kwama-95%
2. Cha noma ukusika kancane kuyadingeka
3. Ukungaguquguquki okuhle kwezingxenye, ukuzinza okuhle nokunemba okuphezulu.
4. Ukuqhathanisa amandla: abakhiqizi bensimbi abayizimpushana abachwepheshile bathuthukise ukwakheka kwesikhunta se-powder metallurgy, futhi amandla aqinile namandla acindezelayo egiya akhiqizwayo asondelene nalawo okubhoboza igiya.Isibonelo, igiya elishayelwa igiya lemoto elinokuhanjiswa okuphezulu. ukuqina futhi kuyigiya le-powder metallurgy.Igiya elibonakalayo, i-powder metallurgy liyasebenza futhi libanzi.
5. Ukucindezela i-Powder usebenzisa ukubunjwa kwesikhunta, kungakhiqiza obunye ubuchwepheshe bokusika be-hobbing abukwazi ukukhiqiza izimo eziyinkimbinkimbi.
6. Ngenxa yokuthi ifanele ukukhiqizwa ngobuningi, ukusebenza kahle kokukhiqiza kuphezulu futhi izindleko ziphansi kunokusika.
7. Ifanele ukukhiqizwa ngobuningi, ngakho intengo iyancintisana ngokuphelele.